The Tubus Disco Carrier is the solution to most difficult rack applications when a disc caliper is located in a position where the mounting braze-on for the drop-out should be. Utilizes a QR Skewer and spacers (all included) for the lower attachment and Tubus' legendary struts up top. Load capacity is 25kg or 55lbs. Cro-Mo, black powder coated. Weighs 658 gms or 1.45 lbs.